/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM; if not, write to the Free Software Foundation,
    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

\*---------------------------------------------------------------------------*/

#include "polyMesh.H"

// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

// Null constructor
inline Foam::topoDistanceData::topoDistanceData()
:
    data_(-1),
    distance_(-1)
{}


// Construct from components
inline Foam::topoDistanceData::topoDistanceData
(
    const label data,
    const label distance
)
:
    data_(data),
    distance_(distance)
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

inline bool Foam::topoDistanceData::valid() const
{
    return distance_ != -1;
}


// No geometric data so never any problem on cyclics
inline bool Foam::topoDistanceData::sameGeometry
(
    const polyMesh&,
    const topoDistanceData&,
    const scalar
) const
{
    return true;
}


// No geometric data.
inline void Foam::topoDistanceData::leaveDomain
(
    const polyMesh&,
    const polyPatch& patch,
    const label patchFaceI,
    const point& faceCentre
)
{}


// No geometric data.
inline void Foam::topoDistanceData::transform
(
    const polyMesh&,
    const tensor& rotTensor
)
{}


// No geometric data.
inline void Foam::topoDistanceData::enterDomain
(
    const polyMesh&,
    const polyPatch& patch,
    const label patchFaceI,
    const point& faceCentre
)
{}


// Update cell with neighbouring face information
inline bool Foam::topoDistanceData::updateCell
(
    const polyMesh&,
    const label thisCellI,
    const label neighbourFaceI,
    const topoDistanceData& neighbourInfo,
    const scalar tol
)
{
    if (distance_ == -1)
    {
        data_ = neighbourInfo.data_;
        distance_ = neighbourInfo.distance_ + 1;
        return true;
    }
    else
    {
        return false;
    }
}


// Update face with neighbouring cell information
inline bool Foam::topoDistanceData::updateFace
(
    const polyMesh& mesh,
    const label thisFaceI,
    const label neighbourCellI,
    const topoDistanceData& neighbourInfo,
    const scalar tol
)
{
    // From cell to its faces.

    if (distance_ == -1)
    {
        operator=(neighbourInfo);
        return true;
    }
    else
    {
        return false;
    }
}


// Update face with coupled face information
inline bool Foam::topoDistanceData::updateFace
(
    const polyMesh&,
    const label thisFaceI,
    const topoDistanceData& neighbourInfo,
    const scalar tol
)
{
    // From face to face (e.g. coupled faces)
    if (distance_ == -1)
    {
        operator=(neighbourInfo);
        return true;
    }
    else
    {
        return false;
    }
}


// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //

inline bool Foam::topoDistanceData::operator==
(
    const Foam::topoDistanceData& rhs
) const
{
    return data() == rhs.data() && distance() == rhs.distance();
}


inline bool Foam::topoDistanceData::operator!=
(
    const Foam::topoDistanceData& rhs
) const
{
    return !(*this == rhs);
}


// ************************************************************************* //
